然而在本例中，您只有一个输入卡和一个输出卡，因次您可以让选项卡中的其余部分保留默认设置。
However, in this example, you have only one input card and one output card, so you can leave the rest of the tabs as default.
这个复杂运算过程的关键在于，这种乘除法混合物生成了一个纯粹的无因次数。
The point of this convoluted procedure is that this combination of multiplication and division produces a pure, dimensionless number.
它本质是消极、否定的，因次即便是在几乎就要成功的时候，也会包含失败的祸根。
It is ultimately negative, and therefore encompasses its downfall even at its moments of apparent triumph.
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